Hello Everyone,

I have fixed my problem.

I went to Control Panel/Troubleshooting, and went to "Hardware and Sound" and clicked on "Troubleshoot Audio Recording."
The window showed 'Troubleshoot and help prevent computer problems.'
A click on "Advanced" showed - 'Apply repairs automatically.'
'Next' showed two details for Microphone - one indicated that the connector for this device is located at the front.... and the other that it was located at the rear.
I clicked the circle to indicate that it was connected to the rear, clicked 'Next' and I was informed that troubleshooting could not identify the problem.
On checking to see if the mic was now working, I found it to be working well!

Regards

Colinito

I hope this information will be of assistance to someone in the fututre.